2 fixes

[Diablohu]

support for getting non-Lockr value

if someone stored some value before using Lockr, that value can now be getting by using Lockr.get()

can now get value that equals 0 or false

if use Lockr.get(key, defaultValue) and the stored value is 0 or false, the result is defaultValue, not 0 or false. this will fix it.

[tsironis]

@Diablohu Can you add related specs for this PR so we can merge it?

[Diablohu]

just fix/modified Lockr.get() function for the 2 fixes mentioned above, for I encountered 2 problems when using Lockr in an exist product

Problem 1: when using Lockr.get() to retrieve an exist localStorage value, an error encountered

Problem 2: if a value is 0 or false, when retrieve using Lockr.get(), it returns as a missing value

[tsironis]

@Diablohu I mean, can you add tests in the lockrSpecs.js file that test your code?

[Diablohu]

specs added

[tsironis]

Awesome work! Thanks for the contribution 💯